Hello,

(This news could come as a shock to some people, so you might want to 
sit down :-)

The method PC_IN_CALL_DUMMY() is no longer needed.  Auditing the source 
code reveals:

*-tdep.c: This code can use get_frame_type() to determine if it's in a 
call dummy, and for many cases (e.g., frame_saved_pc()), just eliminate 
the test (the unwind mechanism doesn't call the *-tdep.c when a dummy 
frame).  Tread carefully for now though.

frame.c, blockframe.c:  Code to prop up older architectures that still 
override PC_IN_CALL_DUMMY.

I'll look to commit this one in a few days,
Andrew